Railway rolling stock – Trucks – Bogie
Patent
1996-09-06
1998-09-15
Le, Mark T.
Railway rolling stock
Trucks
Bogie
B61F 500
Patent
active
058064354
ABSTRACT:
A constant contact spring bearing for use with a railway car truck bolster is provided. Greater design flexibility and installation tolerances are available because a longer travel spring, with potentially lower spring load rate and stress rate, may be used. The present invention facilitates the establishment of loadings that may be expected to fall reliably within set-up tolerances from unit to unit. Instead of mounting the spring bearing on the surface of the truck bolster top member, the present invention provides a recess in the truck bolster to receive the spring, allowing for use of longer springs. With longer travel springs available for use, a spring may be selected with a lower load rate and a lower stress rate.
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Miner Side Bearing Selection Chart TecsPak Alloy Constant Contact Side Bearings (no date).
Miner--W.H. Miner Division TCC, TCC-II, TCC-III Side Bearing Selection Chart (no date).
Amsted Industries Incorporated
Brosius Edward J.
Gregorczyk F. S.
Le Mark T.
Manich Stephen J.
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